Messages in this thread | | | Date | Tue, 8 Mar 2022 12:06:14 -0800 | From | Josh Poimboeuf <> | Subject | Re: [PATCH v4 00/45] x86: Kernel IBT |
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On Tue, Mar 08, 2022 at 04:30:11PM +0100, Peter Zijlstra wrote: > Hopefully last posting... > > Since last time: > > - updated the ftrace_location() patch (naveen, rostedt) > - added a few comments and clarifications (bpetkov) > - disable jump-tables (joao) > - verified clang-14-rc2 works > - fixed a whole bunch of objtool unreachable insn issue > - picked up a few more tags > > Patches go on top of tip/master + arm64/for-next/linkage. Also available here: > > git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.ibt
<applause> Nice work!!! kernel shadow stacks next? ;-)
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
As talked about on IRC there are still a few outstanding issues, that I'm fine with fixing after the merge window during the upcoming -next cycle:
- xen hypercall page functions need 'ret' - (I think you already fixed)
- why don't unreachables need to fill up the entire sym hole?
- get rid of the 'c_file' hack
- improve cmdline option intuitive-ness
- properly integrate the retpoline "demotion" with the new Spectre BHI related patches - probably still needs more discussion - for example we might instead want to disable IBT and warn
-- Josh
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